also: ちょうばん
General term for a hinge, such as on a door or lid. In the construction industry, 丁番 (ちょうばん) is especially common.
ドアの蝶番がきしむので油をさした。
The door hinge was squeaking, so I oiled it.
The hinges on this shelf are made of stainless steel.
anatomical joint
Only with reading ちょうつがい
Used especially for anatomical joints, such as the elbow or knee. Restricted to the reading ちょうつがい.
肘の蝶番を痛めてしまった。
I hurt my elbow joint.
Search-only form; つがい is written in kana.
Common spelling in the construction industry for the reading ちょうばん.